Shuttle-motion fob power-looms



UNITEDv STATES PATENT OFFICE.

WM. CRIGHTON, 0F FALL RIVER, MASSACHUSETTS.

SHUTTLE-MOTION FOR POWER-LOOMS.

Specification of Letters Patent No. 10,126, dated October 18, 1853.

To all whom t may concern.'

Be it known that I, VILLIAM CRIGHTON, of Fall River, in the county ofBristol and State of Massachusetts, have invented a new and usefulImprovement in- Shuttle-Motions for Power-Looms; and I do hereby declarethat the following is a full, clear, and exact description of the same,reference being had to the accompanying drawings, forming part of thisspecification, in which- Figure l, is a vertical section parallel withthe warp, of part of a loom to which my invention is applied. Fig. 2, isa vertical section of the same, taken longitudinally through therace-beam of the lay.

Similar letters of reference indicate corresponding parts, in bothfigures.

This invention consists in connecting the two pickers by means of arigid rod or connection passing through the lay, and giving motion tothe same, by a picker-lever which is operated upon, to throw the shuttlein both directions, by a single cam. The result obtained by thisimprovement is, the giving of the pickers a perfectly parallel mot-ion,by simpler mechanism than that commonly employed for the purpose.

To enable those skilled in the art to make and use my invention, I willproceed to describe its construction and Operation.

A, is t-he frame of the loom.

B, C, indicate the lay.

D, is the crank shaft; and E, is the cam shaft, geared with the crankshaft in the ordinary way; but, instead of extending through the loom,as usual, only extending far enough within the framing to carry the cam,F.

G, G, are the pickers, which consist of two short pieces of wood,protruding vertically through slots in the lay, and intended to be facedwith hide, in the ordinary way. They are connected at their lo-wer endsby a rod, H, by which it is made imperative for both to move together.The rod works in suitable guides, so as to be inclosed within theracebeam, B, of the lay, and keeps the pickers in place.

The picker-lever, I, rocks on a pivot, a, which is fixed in a blocksecured to the lower part of the lay, and is connected with the rod,I-I, by a pin, I), which is secured in the rod, and enters a slot in thestaff. At right angles to the upright arm, I, of the .from a singlelever, I, and one cam, F

picker-lever, is a short arm, J, which is connected by a rod, c, withthe longer arm of, K, a lever of the first order, whose fulcrum, CZ, ison a suitable part of the framing, behind the lay. The shorter arm ofthe lever, K, is furnished with a stud, e, which is acted upon by thecam, F. This cam has its operating part in the form of two arcs ofcircles, of different diameters, described from the axis of its shaft;the said arcs being each nearly half a circle, and being connectedtogether, at both ends, by steps.A

During the revolution of the cam, the lever, K, is kept stationary,except when the steps come in contact with the stud, e, when the leverreceives a sudden movement. The distance moved by the stud is verysmall; but the increased length of the opposite arm of the lever, K, andthe shortness of the arm, J, on the pickeilever, cause the upper end ofthe picker-staff to move, very quickly, the required distance to throwthe shut-tlc.

In the drawing, the parts are shown in the position when the motion ofthe pickers to the left is just commencing. After this motion isfinished, they will remain stationary until the proper time to throw theshuttle to the right, when the cam will have rotated far enough to bringthe next step into operation on the stud, e, and will give the requiredmovement. The ascent and descent of the stud, from one arc of the cam tothe other, will continue to give the necessary motion to the pickers, atregular intervals.

This shuttle-motion dispenses with the long shaft, and with one cam, andis altogether less complicated and costly than the separate mechanismemployed in most looms, to drive the shuttle in each direction.

I do not claim operating the picker by a cam on a short shaft, at theside of the loom; but

TWhat I claim as my invention, and desire to secure by Letters Patent,is,

Connecting the two pickers with a rod or rigid connection, H, whichreceives motion whereby both pickers are operated, as here-j in setforth.

IVM. CRIGHTON. IVitnesses:

LOUIS LAPHAM, A. S. LINDSEY.

